Barrel-tap.



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(Application led Nov. 21, 1900.)

(No Model.)

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i UNITED STATES PATENT' rrrcn.

HORACE GRAYSON, OF PROVIDENCE,`RHODE ISLAND, ASSIGNOR TO HENRY II.WILLIAMS, OF SAME PLACE.

BARRELLTAP.

SPECIFICATION forming part of 'Letters Patent No. 682,797, date septmbr17, 1901. Application iiled November 21. 1900. Serial No. 37.274. (liomodel.)

To @ZZ whom it may concern:

Be it known that I, HORACE GRAYsoN, of Providence, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful Improvements in BarrelTaps, of which the following is aspecification.

. This invention relates to means for tapping barrels containing liquidsunder high pressure--such as beer, ale, (incrand has for its object toprovide a simple and effective device for this purpose adapted to bereadily opened to permit the Withdrawal of liquid from the barrel and tobe tightly closed to prevent leakage.

The invention consistsin the improvements which Iwill now proceed todescribe and claim.

Of the accompanying drawings, Figure l represents a side elevation,partly in section,

of myimproved barrel-tap. Fig. 2 represents a section on line' 2 2 ofFig. l. Fig. 3 represents a section on line 3 3 of Fig'. l. Figs. 4 and5 represent elevations of a portioxrof the tubular key. Fig. 6represents a perspective view of the portion of the key shown in Figs. 4and 5. Fig. 7 represents an end View of the bushing looking from theouter end.

The same letters of reference indicate the same parts in all of thefigures.

In vthe drawings, d represents a casing or bushing which is externallyscrew-threaded and adapted to be engaged byits screw-thread with thehead b of the cask or barrel, the said bushing having an extension ctatits inner end projecting into the barrel and provided internally with atapering seat for a tapering plug-valve'c. The outer end of the bushingd is provided with segmental abutments 0.2602, formed and relativelyarranged as shown in Fig. 7.

d represents a tubular key which has segmental ears d d', said earshaving cam-shaped outer sides d2. The ears d are formed to enter thespaces between the abutments a2, so that the cam-faces d2 of the earscan be caused by the partial rotation of the tubular key to bear uponthe inner faces of the abutments a2, this partial rotation causing thecam-faces of the abutments to coperate in imparting an inward endwisemovement to the tubular key for the purpose hereinafter specified.

n The inner end of the valve c-is provided with an extension c', whichconstitutes a liquid-conduit and a key-engaging shank, said extensionbeing squared externally to engage a squared socket dsof the shank andprovided internally With la passage c2, which conl= municates with portsc3 c3, extending through the periphery of the valve c. The extension aof the bushing is provided with ports arranged to register with theports c3 when the valve is in its opened position, eachportbeing'preferably a group of orifices a3, said oriiic'es beingsufficiently small to prevent the entrance into the valve of floatingpieces of sufficient size to obstruct the valve and the passagetherethrough. Hence the ports in the extension' a act to a certainextent as strainers. n

f e represents a colnpressible annular packing which surrounds the shankc' and is interposed'between the outer end of the body portion of thevalve c and the inner end of the tubular key d. As'` shown in Figs. 1and 2, the bushing or casi-ng a is provided with an internal annularrib,vwhich retains'the packing e in position, even when the. key d isremoved.

-When the tubular key is inserted in the bushing and engaged with theshank c of the valve, the partial'rotation of the key which ,Causes thecam-faces .cl2 to bear on the inner sides of the abutments a2 andimparts an inward endwise movement to the key above described also turnsthe valve to bring its ports o8 into register with the ports in theextension a' of the bushing. The opening of the valve is thereforeaccompanied by a compression of the packing e, caused by the inwardendwise/movement of the key, so that a tight joint is formed between thevalve and the key, preventing. any leakage of liquid between the outersurface of the key and the bushing and causing the liquid to flowthrough the passage c2 and the interior of the key d,

the latter constituting the outlet of the barrel and being provided witha suitable faucet f. When the key is turned in the opposite direction tobring its ears d out of engagement with the abutments a2 and permit thewithdrawal of the key, the valve is at the same ICG time turned todisconnect its ports with the ports in the extension of the bushing, thevalve being thus closed.

The extension a is provided at the outer end of the seat for the valve cwith an internal screw-thread 0x1.

g represents an externally-threaded head formed to engage the thread a,said head when screwed into the thread ai* bearing against the largerend of the valve c and pressing the latter firmly against its seat,provision being thus made for maintaining a slight connection betweenthe valve and its seat and compensating for wear of the valve. The headg is provided with a screw-threaded stem or stud g', with which isengaged a nut 7L, having a flange h.

t' represents an annular com pressible packing, one side of which bearsagainst the head g and the outer end of the extension a', its other sidebearing against the ange h of the nut h, said packing covering the jointbetween the head g and the extension ct and preventing leakage throughsaid joint. The packing z' may be compressed by rotating the nut h uponthe stem or stud g'.

i It will be seen that the improved tap above described is of anextremely simple construction and that it is adapted to operate eectivlyand without liability of getting out of or er.

The key d is preferably provided with stops d4 at the rear ends of thecam-faces d2 to arrest the rotation of the key when the valve has beenfully opened.

I claim-V 1. Abarrel-tap comprisinga bushing adapted for engagement withthe head of a barrel and having inwardly-projecting segmental abutmentsat its outer end,- an internal annular rib at a distance from its outerend and an extension at its inner end containing a valve-seat andliquid-ports, a rotary valve fitted in said seat and having akey-engaging shank projecting into the bushing and 6eme? ports adaptedto register with the ports in the extension, the said valve having aliquidpassage extending from the ports through said shank, a tubular keyformed internally at its inner end to fit over and engage said shank andhaving segmental cam-shaped ears formed to engage said abutments, theears and abutments being formed and arranged so that a rotation of thekey which opens the valve engages the ears with the abutments and givesthe key an endwise inward movement, and a compressible packinginterposed between a shoulder located near the outer end of the valveand the said internal rib of the bushing, and surrounding the shank ofthe valve, said packing being compressed by the inward movement of thekey and forming a liquid-tight joint, the packing being adapted to beretained iu place by the said rib when the key is Withdrawn.

2. Abarrel-tap comprisingabushingadapted for engagement with the head ofa barrel and having an extension at its inner end, containing a taperedvalve-seat, liquid-ports, an internal screw-thread at the larger end ofthe valve-seat, a tapered plug-valve fitted to said seat and havingports adapted to register with the ports in the extension, and a shankprojecting from the smaller end of the valve into the interior of thebushing, a screw-threaded valve-ad j usting head or abutment engagedwith the internal thread of the extension, said head having ascrew-threaded shank projecting from its outer side, a` nut formed toengage said shank, and a compressible packing interposed between saidnut and the outer end of the extension, said packing covering the jointbetween the extension and the valve-adjusting head1 In testimony whereofI have aflixed my signature in presence of two witnesses.

HORACE GRAYSON.

Witnesses:

JOHN KEENAN, WILBUR A. Sco'rr.

